Vulnerability · Published Nov 13, 2025 · Assigned by GitHub_M
CVE-2025-64753grist-core has insufficient access control in endpoints for comparisons between documents and versions
Medium 5.3
In plain English
A medium-severity incorrect authorization in grist-core from gristlabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Official description
grist-core is a spreadsheet hosting server. Prior to version 1.7.7, a user with only partial read access to a document could still access endpoints listing hashes for versions of that document and receive a full list of changes between versions, even if those changes contained cells, columns, or tables to which the user was not supposed to have read access. This was fixed in version 1.7.7 by restricting the `/compare` endpoint to users with full read access. As a workaround, remove sensitive document history using the `/states/remove` endpoint. Another possibility is to block the `/compare` endpoint.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| gristlabs | grist-core | < 1.7.7 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/gristlabs/grist-core/security/advisories/GHSA-3v78-cw58-v685 x_refsource_CONFIRM
- https://github.com/gristlabs/grist-core/releases/tag/v1.7.7 x_refsource_MISC